Starting in the 1990's on Police cars and heavier F-Series trucks Ford started plumbing the sandwich cooler with water instead of using it to send oil to an external cooler. Unfortunately these are over one inch thick. But if one fit, you could use it simply as a spacer. Leave the coolant tubes alone, cut them off, or plumb them into the lower radiator hose and actually use it as a cooler. German cars have been using such "reverse" oil coolers since at least 1979.
If such appeals to you I have one around somewhere I can measure for actual size. And I think I have a truck version of the lower hose with the extra hoses molded in that I could take a picture of. Pretty sure one of theseadapters is a lot thicker than what you have in mind though. I swear I have seen a simple aluminum spacer for sale somewhere that would probably suit you better. Maybe someone else's memory is better than mine.
I have seen Chevy S10's come from the factory with more traditional oil cooler spacers and in many non-4wd setups they weren't functional and blocked off by brass screw-in plugs from the factory. Such aftermarket type spacers for Fords are quite a bit thinner than the water type ones and could easily be blocked off like Chevy did with plugs.
Last edited by GypsyR; 11-21-2012 at 11:20 PM.